bcm63xx: fix port state after network down

bcm_enetsw_probe did not properly reset port states, resulting in
connected ports staying disabled after bringing up the interface the
second time.

SVN-Revision: 31881

target/linux/brcm63xx/patches-3.3/431-bcm63xx_enet-reset-port-link-state-in-bcm_enetsw_ope.patch

@@ -0,0 +1,28 @@
+From 6d5c5bb13db3fd8e3dd0b82742b3957f41a4a3ac Mon Sep 17 00:00:00 2001
+From: Jonas Gorski <[email protected]>
+Date: Thu, 24 May 2012 20:38:58 +0200
+Subject: [PATCH] bcm63xx_enet: reset port link state in bcm_enetsw_open
+
+bcm_enetsw_open disables all ports, but does not reset their link state.
+This results in connected ports staying disabled after a ifdown/ifup
+cycle, since bcm_enetsw_phy_poll only enables them if their current state
+is different from the stored link state.
+
+Fix this by also resetting the port link state.
+
+Signed-off-by: Jonas Gorski <[email protected]>
+---
+ drivers/net/ethernet/broadcom/bcm63xx_enet.c |    2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
++++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+@@ -2214,6 +2214,8 @@ static int bcm_enetsw_open(struct net_de
+ 		enetsw_writeb(priv, ENETSW_PTCTRL_RXDIS_MASK |
+ 			      ENETSW_PTCTRL_TXDIS_MASK,
+ 			      ENETSW_PTCTRL_REG(i));
++
++		priv->sw_port_link[i] = 0;
+ 	}
+ 
+ 	/* reset mib */